1 files changed, 76 insertions, 0 deletions
diff --git a/third_party/js/PKI.js/src/errors/ArgumentError.ts b/third_party/js/PKI.js/src/errors/ArgumentError.ts
new file mode 100644
index 0000000000..c3852f6b93
--- /dev/null
+++ b/third_party/js/PKI.js/src/errors/ArgumentError.ts
@@ -0,0 +1,76 @@
+
+export interface AnyConstructor {
+  new(args: any): any;
+}
+
+export type ArgumentType =
+  | "undefined"
+  | "null"
+  | "boolean"
+  | "number"
+  | "string"
+  | "object"
+  | "Array"
+  | "ArrayBuffer"
+  | "ArrayBufferView"
+  | AnyConstructor;
+
+export class ArgumentError extends TypeError {
+
+  public static readonly NAME = "ArgumentError";
+
+  public static isType(value: any, type: "undefined"): value is undefined;
+  public static isType(value: any, type: "null"): value is null;
+  public static isType(value: any, type: "boolean"): value is boolean;
+  public static isType(value: any, type: "number"): value is number;
+  public static isType(value: any, type: "object"): value is object;
+  public static isType(value: any, type: "string"): value is string;
+  public static isType(value: any, type: "Array"): value is any[];
+  public static isType(value: any, type: "ArrayBuffer"): value is ArrayBuffer;
+  public static isType(value: any, type: "ArrayBufferView"): value is ArrayBufferView;
+  public static isType<T>(value: any, type: new (...args: any[]) => T): value is T;
+  // @internal
+  public static isType(value: any, type: ArgumentType): boolean;
+  public static isType(value: any, type: ArgumentType): boolean {
+    if (typeof type === "string") {
+      if (type === "Array" && Array.isArray(value)) {
+        return true;
+      } else if (type === "ArrayBuffer" && value instanceof ArrayBuffer) {
+        return true;
+      } else if (type === "ArrayBufferView" && ArrayBuffer.isView(value)) {
+        return true;
+      } else if (typeof value === type) {
+        return true;
+      }
+    } else if (value instanceof type) {
+      return true;
+    }
+
+    return false;
+  }
+
+  public static assert(value: any, name: string, type: "undefined"): asserts value is undefined;
+  public static assert(value: any, name: string, type: "null"): asserts value is null;
+  public static assert(value: any, name: string, type: "boolean"): asserts value is boolean;
+  public static assert(value: any, name: string, type: "number"): asserts value is number;
+  public static assert(value: any, name: string, type: "object"): asserts value is { [key: string]: any; };
+  public static assert(value: any, name: string, type: "string"): asserts value is string;
+  public static assert(value: any, name: string, type: "Array"): asserts value is any[];
+  public static assert(value: any, name: string, type: "ArrayBuffer"): asserts value is ArrayBuffer;
+  public static assert(value: any, name: string, type: "ArrayBufferView"): asserts value is ArrayBufferView;
+  public static assert<T>(value: any, name: string, type: new (...args: any[]) => T): asserts value is T;
+  public static assert(value: any, name: string, type: ArgumentType, ...types: ArgumentType[]): void;
+  public static assert(value: any, name: string, ...types: ArgumentType[]): void {
+    for (const type of types) {
+      if (this.isType(value, type)) {
+        return;
+      }
+    }
+
+    const typeNames = types.map(o => o instanceof Function && "name" in o ? o.name : `${o}`);
+    throw new ArgumentError(`Parameter '${name}' is not of type ${typeNames.length > 1 ? `(${typeNames.join(" or ")})` : typeNames[0]}`);
+  }
+
+  public override name: typeof ArgumentError.NAME = ArgumentError.NAME;
+
+}